New materials have been prepared for the removal of strontium and actinides from high-level nuclear waste, with initial focus on waste stored at the Savannah River Site.  Metal-organic frameworks (MOFs) and MOF templated materials containing metals such as Al, Fe, and Ti, have been synthesized and evaluated for strontium and actinide removal under highly alkaline conditions.  The MOF serves as a precursor material, and decomposes upon exposure to the highly alkaline conditions of the waste forming a porous metal oxide or hydroxide which serves as the active material.  In addition the MOFs have been used as templates to form core-shell mixed metal oxides, which have also shown promise for removal of strontium and actinides from high-level waste.

Metal-organic frameworks for strontium and actinide separations in high-level nuclear waste

245th National Meeting (2013)

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